Can someone explain interest calculation

I filed return for the period Aug 2017-2018
to May 2020-2021 in that period tax taibility 10000 .. and I didn't paid interested in this those return from the period 2017 to 2020 .now can I pay interest in August return 2020 if yes please explain interest calculation Aug 2017 to may 2020 and tax liability 10000 ..